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## org.bouncycastle.pqc.crypto.sdith
Class SDitHSigner

    java.lang.Object
      org.bouncycastle.pqc.crypto.sdith.SDitHSigner

All Implemented Interfaces:
  MessageSigner

public class SDitHSigner
extends java.lang.Object
implements MessageSigner

SDitH (Syndrome-Decoding-in-the-Head) signer for the Hypercube variant.

Implements `MessageSigner` (one-shot whole-message signing) — the signature scheme hashes the message inside the protocol so there is no benefit to a streaming API. Returned signatures are the raw SDitH signature bytes (the reference KAT generator appends the message itself; that concatenation is left to the caller / a JCA wrapper).

Constructor Summary
`SDitHSigner()`

Method Summary
`byte[]` | `generateSignature(byte[] message)` sign the passed in message (usually the output of a hash function).
`void` | `init(boolean forSigning, CipherParameters param)` initialise the signer for signature generation or signature verification.
`boolean` | `verifySignature(byte[] message, byte[] signature)` verify the message message against the signature value.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### SDitHSigner

    public SDitHSigner()

Method Detail

### init

    public void init(boolean forSigning,
                     CipherParameters param)

  Description copied from interface: `MessageSigner`
  initialise the signer for signature generation or signature verification.

  Specified by:
    `init` in interface `MessageSigner`
  Parameters:
    `forSigning` - true if we are generating a signature, false otherwise.
    `param` - key parameters for signature generation.

### generateSignature

    public byte[] generateSignature(byte[] message)

  Description copied from interface: `MessageSigner`
  sign the passed in message (usually the output of a hash function).

  Specified by:
    `generateSignature` in interface `MessageSigner`
  Parameters:
    `message` - the message to be signed.
  Returns:
    the signature of the message

### verifySignature

    public boolean verifySignature(byte[] message,
                                   byte[] signature)

  Description copied from interface: `MessageSigner`
  verify the message message against the signature value.

  Specified by:
    `verifySignature` in interface `MessageSigner`
  Parameters:
    `message` - the message that was supposed to have been signed.
    `signature` - the signature of the message

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